sub not working?

[tonygsxr]

hi, i've just bought a 2001 punto sporting with a kenwood head unit and the sub is not working?? looking on this forum,lots of people having same problem but i'm shocking with wires and dont understand iso/remote/live/earth etc. so can anybody tell me which wires i need to join using this pictures. thanks

 

[Punto31CRH]

Is the sub an aftermarket sub or a standard punto sub?

 

[tonygsxr]

thanks for the reply but i've sorted it, it's the standard sub and remembered that i have a standard head unit in the loft from years ago when i last had a punto

 

[tonygsxr]

p.s the one i have put in is only cassette, can i buy standard single cd stereo (off ebay) and will it plug in and play also work the standard sub? thanks